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The water and Diesel tanks Hallberg-Rassy 40 - 43
If double tanks are fitted the tank gauge will always show the level in the lower tank. From the higher
tank a pipe with a shut off valve leads to the lower. This valve should only be opened to drop the
content of the upper tank down into the lower tank. After this the valve should be closed again.
A few words about Diesel oil
The diesel oil can be blue, grey, neutral, yellow or any colour. All this is of no consequence. What’s
important is that it’s clear and free from water.
It’s simple to take a sample of the oil in your main diesel tank. In the engine compartment you will find
a hand pump in brass fitted on a bulkhead. (centre cockpit boats). Directly below the pump is a valve.
Open this valve. The outlet hose is put into a glass jar. The pump draws oil from the lowest point in the
tank and you can easily check the quality of your fuel. If necessary you can pump off any sludge or
water with the same pump. Close the valve after use, as diesel may overflow when the tanks are filled.
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